Of that number, almost a quarter (471) are European residents and between them, have attended more than 208 universities all over the world — not counting any honorary degrees or doctorates.

Business Insider combed through the education history of these 471 super rich individuals to find where they all went to university. Our results reveal the 28 higher education institutions that produce the most European billionaires.

Three of the institutions that made the list are in fact outside of Europe — including the university the took number one spot. Stand-out and recurrent degree subjects among the list of graduates-turned-tycoons included economics, engineering, mechanical engineering, law, and business management and administration.

Keep scrolling to find out the 28 universities that have produced the most European billionaires. They are ranked in ascending order, based on their number of billionaire European graduates.

Note: Some billionaires may have obtained other degrees from universities which do not feature in the top 28. Similarly, other billionaires may be listed multiple times under different universities because they have more than one degree.

Furthermore, the net worth figures are taken from Forbes' live rich list, meaning they are subject to change.

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9. Georgetown University, US — 2 billionaires

This American university, located in Washington D.C., has two European billionaires among its notable alumni, which include former-President Bill Clinton, former-Associate Justice of the Supreme Court Antonin Gregory Scalia, and Ivanka Trump.

Graduate European billionaires:

August von Finck (net worth $7.8 billion)

Henri Beaufour (net worth $3 billion)

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=8. Vienna University of Economics and Business Administration, Austria — 3 billionaires

Boasting three European billionaires graduates, Vienna University of Economics and Business Administration is the biggest university in Europe to focus solely on business and economics-related subjects.

Graduate European billionaires:

Dietrich Mateschitz (net worth $20.3 billion)

Erman Ilıcak (net worth $2.7 billion)

Georg Stumpf, Jr (net worth $1.64 billion)

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=8. Technical University of Munich, Germany — 3 billionaires

This German university is a member of TU9 — a group of the most recognised and prestigious German technology colleges and universities. Alongside the three billionaire alumni, TUM has also educated 13 Nobel laureates.

Graduate European billionaires:

Andreas von Bechtolsheim (net worth $5.4 billion)

Erman Ilıcak (net worth $2.7 billion)

Karl Friedrich Braun (net worth $1.28 billion)

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=8. University of Paris, France — 3 billionaires

Before the institution was disbanded in 1970, the University of Paris was one of the oldest and most prestigious universities in the world for humanities subjects. The University has educated three European billionaires alive today, including the CEO of Chanel Perfumes, Gérard Wertheimer.

=8. Mannheim Business School, Germany — 3 billionaires

The German University of Mannheim's business school is consistently ranked the best in the country, and is one of the top institutions in the world for economics and business administration. Notable alumni include Dieter Schwarz — chairman and CEO of international supermarket chain Lidl.

=8. Gazi University, Turkey — 3 billionaires

Located in Ankara, Turkey, Gazi University is comprised of 21 faculties with approximately 77,000 students between them. Notable alumni include Turkish billionaires Sezai Bacaksiz, Nihat Ozdemir, and Hamdi Akin — all of whom studied mechanical engineering.

Graduate European billionaires:

Sezai Bacaksiz (net worth $1.63 billion)

Nihat Özdemir (net worth $1.63 billion)

Hamdi Akın (net worth $1 billion)

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=8. Albert Ludwig University of Freiburg, Germany — 3 billionaires

Ranking in the Times' Top 100 World University Rankings this year, the University of Freiburg's 550-year history lends to its reputation of being one of Germany's most elite and prestigious academic institutions. On top of that, the university has three European billionaire alumni, including medical facilities tycoon Lutz Mario Helmig.

=8. Complutense University of Madrid, Spain — 3 billionaires

As well as educating three European billionaires, Spain's Complutense University of Madrid's notable alumni list includes seven Nobel Prize winners, seven Miguel de Cervantes prize winners, multiple presidents of the EU Parliament, and a NATO Secretary General.

Graduate European billionaires:

Alicia Koplowitz (net worth $2.7 billion)

Alberto Alcocer (net worth $1.4 billion)

Alberto Cortina (net worth $1.33 billion)

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=8. University of Cologne, Germany — 3 billionaires

The University of Cologne also has three European billionaires amongst its notable alumni. According to the Time Higher Education Guide, it has partnerships with Paris-Sorbonne, University College London, Maastricht University, and the Warsaw School of Economics which allows students to pursue joint honours programmes with other world-renowned universities across Europe.

Graduate European billionaires:

Heinrich Deichmann (net worth $10.2 billion)

Wolfgang Reimann (net worth $4.1 billion)

Matthias Reimann-Andersen (net worth $4.1 billion)

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=8. Boston University, US — 3 billionaires

The US News and World Report ranked Boston University in 32nd place in its global ranking of universities. The university's prestige goes back many generations of staff and students, and the telephone was reportedly invented in a Boston University laboratory by professor Alexander Graham Bell over 150 years ago.

Graduate European billionaires:

Denis O'Brien (net worth $5.1 billion)

Dona Bertarelli (net worth $4.6 billion)

Ferit Faik Şahenk (net worth $2.3 billion)

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=7. Stockholm University, Sweden — 4 billionaires

Stockholm University is regarded among the top 100 universities in the world, according to the Academic Ranking of World Universities. Graduates include Stefan Persson, Sweden's richest man and chairman of global fashion retailer H&M.

Graduate European billionaires:

Stefan Persson (net worth $19.1 billion)

Antonia Johnson (net worth $6.1 billion)

Tom Persson (net worth $2.1 billion)

Torbjörn Törnqvist (net worth $2.1 billion)

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=7. Polytechnic University of Madrid, Spain — 4 billionaires

Florentino Pérez (left) — graduate of the Polytechnic University of Madrid, billionaire, and president of Real Madrid football club.Getty/Denis Doyle/Stringer

Regarded as the top technical university in Spain by Spanish newspaper El Mundo, its multiple engineering schools are consistently among the best engineering departments in Europe. Notable graduates include Real Madrid President Florentino Pérez.

Graduate European billionaires:

Rafael Del Pino y Calvo-Sotelo (net worth $3.4 billion)

Juan-Miguel Villar Mir (net worth $3.3 billion)

Florentino Pérez (net worth $2.1 billion)

D. Leopoldo Del Pino y Calvo-Sotelo (net worth $1.25 billion)

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=7. Karlsruhe Institute of Technology, Germany — 4 billionaires

KIT graduates have a history of pioneering in their respective fields, and the university is ranked 20th in the world for graduate job prospects.

The institution has produced four European billionaires, including German-born Stefan Quandt — owner of one-quarter of BMW, Rolls Royce, and Mini shares. He graduated from KIT with joint honours in economics and engineering and is now worth $19.2 billion.

Graduate European billionaires:

Stefan Quandt (net worth $19.2 billion)

Hasso Plattner (net worth $12.7 billion)

Dietmar Hopp (net worth $10.2 billion)

Guenther Lehmann (net worth $2.8 billion)

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=7. Imperial College London, UK — 4 billionaires

Described as a "one-of-a-kind institution" by Quacquarelli Symonds in their World University Rankings, which placed the institution eight in the world, Imperial College London focuses primarily on science, engineering, medicine, and business subjects.

=7. University of Cambridge, UK — 4 billionaires

The third oldest university in the world still in operation, Cambridge is consistently ranked the best university in the United Kingdom alongside Oxford.

And with an alumni list boasting names from a diverse array of professions, from scientist Stephen Hawking to actress Emma Thompson, it's no wonder that there are four European billionaires from Forbes' 2017 rich list that have been educated here.

Graduate European billionaires:

Andrew Currie (net worth $3.4 billion)

John Reece (net worth $3.4 billion)

Mark Coombs (net worth $1.92 billion)

David Harding (net worth $1.55 billion)

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=6. University of Zurich, Switzerland — 5 billionaires

Switzerland's largest university, the University of Zurich has over 26,000 enrolled students and offers 13 different bachelor degree programmes.

Swiss business magnate, turned philanthropist Stephan Schmidheiny studied his undergraduate and his doctorate degrees in law here.

=6. University of Oxford, UK — 5 billionaires

Ranked the best university in the world in the Times' 2017 World University Rankings, Oxford University has educated an impressive five European billionaires that feature in Forbes' 2017 list.

The billionaires feature alongside a long list of notable alumni going back to the eleventh century, including Oscar Wilde, Bill Clinton, Rupert Murdoch, Theresa May, and historic poet John Donne.

Graduate European billionaires:

Bruno Schroder (net worth $5.7 billion)

Alfred Oetker (net worth $2.3 billion)

Peter Unger (net worth $2.2 billion)

Alex Beard (net worth $1.64 billion)

Jasminder Singh (net worth $1.32 billion)

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=6. University of Milan, Italy — 5 billionaires

Giorgio Armani, University of Milan alumnus with a net worth of $8.3 billion, backstage at Paris Fashion Week.Getty/Pascal Le Segretain

Alumni include former Italian president, turned media tycoon Silvio Berlusconi and designer label Prada's head designer and Miu Miu founder Miuccia Prada. The billionaire alumni of the University of Milan have a combined net worth of over $24 billion.

With a list of alumni including former Prime Ministers Tony Blair and Margaret Thatcher, journalist Sophie Raworth, and former CEO of Coca-Cola Muhtar Kent, it's no wonder this London university boasts three European billionaires on its list of notable alumni.

Its post-graduate business school, Cass Business School, was home to a further four European billionaires. They include Stelios Haji-Ioannou, the founder of budget airline EasyJet, and sister Clelia, who went to both the university and the business school.

=5. HEC Paris, France — 6 billionaires

This Paris-based international business school has an acceptance rate of only 8%, with only 4,000 enrolled students at any time. As a result, this prestigious institution is often associated with the best and has educated six European billionaires alive today.

4. ETH Zürich, Switzerland — 7 billionaires

Placing 10th in the QS World University Rankings and with Albert Einstein as one of its many alumni, it's no wonder ETH Zurich features on this list.

Business school billionaires:

Hansjörg Wyss (net worth $5.6 billion)

Willi Liebherr (net worth $5.3 billion)

Thomas Schmidheiny (net worth $5 billion)

Eva Maria Bucher-Haefner (net worth $2.7 billion)

Nicola Leibinger-Kammüller (net worth $1.69 billion)

Markus Blocher (net worth $1.31 billion)

Mehmet Sinan Tara (net worth $1.28 billion)

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3. London School of Economics, UK — 8 billionaires

Ranked 25th in the Times' World University Rankings for 2018, the London School of Economics boasts associations with 16 Nobel Prize winners and 37 past or present world leaders, as well as eight living European billionaires.

Graduate European billionaires:

Michael Platt ($4.5 billion)

Sebastian Kulczyk (net worth $3.7 billion)

Spiro Latsis (net worth $2.8 billion)

Aristotelis Mistakidis (net worth $2.4 billion)

Jacques Saadé (net worth $1.86 billion)

Walter Frey (net worth $1.28 billion)

Stelios Haji-Ioannou (net worth $1.21 billion)

Clelia Haji-Ioannou (net worth $1.18 billion)

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2. University of St. Gallen, Switzerland — 10 billionaires

University of St. Gallen is an education facility in Switzerland specialising in business administration, economics, law, and international affairs. And with 10 living European billionaires among its alumni, the university is the highest ranking European institution on the list.